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이세훈,조영선,김정만,이은영 가톨릭대학산업의학센타 산업의학연구소 1985 韓國의 産業醫學 Vol.24 No.1
For the purpose of obtaining of effective biological monitoring data, studies to evaluate the health consequences of lead absorption were conducted smelter workers who have been exposed to lead occupationally. The 103 smelter lead workers and the 102 smelter non-lead workers were observed and the questionnaire covered age, work history, symptoms possibly associated with lead poisoning. The biological parameters chosen for this study were as follows; blood lead(PbB), urine lead(PbU), δ-aminolevulinic acid in urine(ALAU), coproporphyrin in urine(CPU), zinc protoporphyrin in whole blood(ZPP), hemoglobin(Hb), δ-aminolevulinic acid dehydratase(ALAD) activity & ALAD activity ratio(A/R; absorbance at substrate pH 6.6/absorbance at substrate pH 5.8). The results obtained were as follows; 1. The average age were 39.1±7.4 years and 39.2±7.7 years in smelter lead workers and smelter non-lead workers, respectively. In smelter lead workers and smelter non-lead workers, the average work duration were 131.7±63.3 months and 138.1±63.1 months, respectively. 2. The mean value of blood lead were 45.0+8.8㎍/100ml and 36.4±6.8㎍/100ml in smelter lead workers and non-lead workers, respectively. In smelter lead workers and non-lead workers, the mean value of zinc protoporphyrin were 89.6+45.1㎍/100ml and 46.5+21.5㎍/100ml, respectively. The mean value of other biological parameters except ALAD & A/R of smelter lead workers were in normal range. 3. Among various pairing of the biological parameters of lead exposure in smelter lead workers and smelter non-lead workers, the correlation between PbB & ZPP showed highest coefficient value. 4. A simple regression analysis was done between PbB and ZPP, and between PbB and CPU, taking PbB as a dependent variable. In smelter lead workers and smelter non-lead workers, coefficients of determination between PbB and ZPP were 67.1% and 59.2%, respectively. Also, the coefficients between PbB and CPU were 45.1% and 26.7%, respectively Consequently, ZPP is better indicator than CPU in estimation PbB levels in screening test of lead absorption. 5. Gastrointestinal compliants were the most frequent self-reporting symptoms. As more frequent are the compliants, the mean concentration levels of PbB and ZPP increased.
경막외마취 환자에서 10% Pentastarch 용액의 혈장확장효과
이정은,박병룡,김은경,김만수,최세진 충남대학교 의과대학 지역사회의학연구소 1993 충남의대잡지 Vol.20 No.1
In order to compare the effect of 10 % pentastarch solution with Ringer's lactate solution on plasma volume expansion in thirty epidural anesthetic patients, systolic arterial blood pressure (SABP), diastolic arterial blood pressure(DABP), heart rate(HR), central venous pressure(CVP), cardiac output(CO) and changes of hemoglobin(Hb) were measured. The patients were devided into three groups Group Ⅰ (n=10) ; Epidural anesthesia was performed without fluid infusion previously(control) Group Ⅱ (n=10) ; 500 ml of Ringer's lactate solution was rapid infused intravenously before epidural anesthesia Group Ⅲ (n=10) ; 500 ml of 10% pentastarch solution was rapid infused intravenously before epidural anesthesia All data were collected before fluid infusion, at 15 min, at 30 min, at 45 min, at 60 min, at 120 min and at 180 min after epidural local anesthetic injection. The results are as follows. 1. SABP, DABP, HR, CVP and CO were decreased significantly (p<0.05) at 30, 45 minute after local epidural anesthetic injection in Group Ⅰ and Group Ⅱ. There was no any significant differences between two groups. 2. SABP, DABP, HR and CO were not changed significantly, Besides CVP was increased significantly (p<0.05) after 10% pentastarch solution infusion in group Ⅲ. 3. Changes of Hb were increased in group Ⅲ.
충남대학교병원 마취발전의 경향에 관한 분석 : 1967년부터 - 1996년까지 from 1967 to 1996
최세진,김상수,정규돈,윤석화,신용섭,손수창,이원형,김혜자,이정은 충남대학교 의과대학 지역사회의학연구소 1998 충남의대잡지 Vol.25 No.2
To evaluate the specificity and historical trends of the anesthesia in Chungnam National University Hospital, anesthetic experiences of 83,572 in total performed at Chungnam National University Hospital from January 1967 to December 1996 were analyzed statistically and clinically according to age, sex, surgical department, physical status, elective and emergency surgery, premedicants, IV anesthetics, anesthetic methods, inhalational anesthetics, muscle relaxants. The results were as follows : 1. The number of cases has been steadily increased year by year. 2. The ratio of male to female was 52.8% : 47.2%. 3. According to the age, There were 44,905 cases (54%) in the group of 13-45 years. 4. According to the ASA classification of physical status, most of the cases were belonged to the class 1 & 2 (72.5%). 5. The ratio of elective to emergency was 79.4% to 20.6%. 6. Recently, glycopyrrolate has been used increasingly. 7. Thiopental sodium has been mainly used for intravenous induction agent. 8. General anesthesia has been used mainly. 9. Enflurane is the most common inhalational anesthetic agent. but Isoflurane has been used increasingly. 10. Most of muscle relaxants are Pancuronium & Vecuronium(84.5%).
환경농업 시범마을 논에서 시비에 따른 무척추동물 개체 수 변화
한민수,신중두,나영은,이남종,박문희,김세근 한국환경농학회 2002 한국환경농학회지 Vol.21 No.2
논의 관리방법에 따른 수서생물상의 변동 양상을 파악하기 위하여 종합적인 환경농업기술 시범 2개 지역의 논 및 하천에서 주기적으로 조사 분석하였다. 논에서의 수서 무척추동물의 총 개체 수는 두 지역 모두 농가관행구에 비해 화학비료 토양검정 시비구에서 62% 이상 높았고 그 다음은 두 지역에서 서로 다르게 나타나 옥천의 경우 농가관행구, 양평은 화학비료+개량재 순으로 많고, 가장 적은 처리는 무비구였다. 수서곤충의 총 개체 수는 토양검정시비구가 농가관행구 옥천 및 양평 각각 328, 45.1/L보다 56%, 69% 더 많았다. 갑각류의 총 개체수는 옥천 지역에서는 토양검정 화학비료구> 화학 비료+개량제구> 농가관행구> 무비구 순으로 많았으며, 양평에서는 화학비료+개량제구>토양검정 화학비료>무비> 농가관행구 순으로서 과다 비료시용구인 농가관행구에서 가장 적었다. 두 지역의 논관류 하천에서 서식하는 수서 무척추동물은 59과 76종이 분류되었고, 미확인종이 14종으로 조사되었으며, 특히 물방개과 중 노란테 콩알 물방개 및 땅콩 콩알 물방개가 채집되었고 양평 지역에서는 날도래 종류가 다양하게 서식하고 있는 것으로 나타났다. 하천지류별 수서 무척추동물 서식밀도는 두 지역 모두에서 상류보다는 하류에서 밀도가 높았으며, 옥천의 연평균 성적에서도 하류에서 1300/0.09 ㎡로 최상류에 비해 172% 더 많은 밀도를 나타냈다. 친환경 농업 실천 2개 지역에서의 논 서식 수서 무척추동물 개체 수 조사 결과 일반관행 농가 논 91.1/L 보다 58% 더 많았다. This study was conducted to survey and identify kinds and population of the freshwater invertebrate fauna according to the managements of paddy rice fields at Ok-Chun and Yang-Pyung. The experiment was conducted in 4 paddy plots; conventional fertilization plot (CF), fertilization by prescription with soil testing with (ST+A) or without soil amendment (ST), and no fertilization as the control. In addition, the freshwater invertebrate fauna was also surveyed at 3 sections of as upper, intermediate and down, in both Jitan and Bungsan stream. The total number of the freshwater invertebrates was higher in the order of ST>CF>ST+A>C and ST>ST+A>CF>C at Ok-Chun and Yang-Pyung, respectively. The population density of aquatic insects was higher in plots fertilized by prescription with soid testing than in the other plots at both demonstration villages. The freshwater invertebrates collected in Jitan and Bungsan stream were identified and classified into 59 families and 90 species, and their population density was highest in the downstream among.
Mo 화학기상증착에 있어서 불순물 농도에 미치는 증착조건의 영향
배상석,서성교,홍은식,김승모,조미정,한혜정,이두성,김세훈,민석홍 국립7개대학공동논문집간행위원회 2001 공업기술연구 Vol.1 No.-
The thermal decomposition process of Mo(CO)_6 on chemical vapor deposition was investigated by analyzing the effects of deposition temperature, pressure, and reaction gas on the phase change of deposited films. Mo_2C was deposited at or below 350℃ due to the incompleteness of thermal decomposition of Mo(CO)_6, but Mo films was successfully deposited at 400℃ or higher temperatures. The variation of deposition pressure did not change the dependence of decomposition process on deposition temperature. The activation energy of surface reaction was 5.8 ㎉/mole.